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ford 8n governor linkage

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05-10-2005 18:08:35

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just put a new carb on my 8n and am having trouble adjusting the linkage. with the gas lever on lowest position should the governor be completely open? would appreciate any help. thanks

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05-11-2005 02:38:08

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 Re: ford 8n governor linkage in reply to condorf, 05-10-2005 18:08:35  
Not sure what "adjustment" you"re talking about. I guess your "gas lever" is the carb throttle shaft arm but I"m don"t know what you mean by the governor being "completely open." Anyway...
You replaced the carb so you have the short linkage from a governor arm to the throttle shaft arm and you adjust that length to just fit without pushing or pulling or holding anything anywhere. You are not adjusting the carb or the governor, you"re just fitting the linkage.
If you"re talking about the hand throttle to governor linkage then that is adjusted so the governor arm reaches it"s maximum speed stop as the hand throttle reaches the last notch in the quadrant. The maximum speed stop is adjusted to 2200-rpm maximum engine speed after you get the engine running and the carb jets set. When the hand throttle is in the first and lowest notch, the governor arms are at rest and not being held in any position by the linkage from the hand throttle or the the linkage from the carb.
The governor spring is adjusted by bending the end of the spring so that there is no slack or preload on the spring. I get that spring length just right because if it"s more than a tiny bit off (1/128") the hand throttle will not operate in the first few knotches or the hand throttle will be engaging the governor all the time. More than 1/64" off and the hand throttle will not operate the governor in the bottom 1/4 to 1/3 of the quadrant. It"s tetchy.

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05-11-2005 14:52:37

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 Re: ford 8n governor linkage in reply to Rob, 05-11-2005 02:38:08  
Rob and 4D9MAN, thanks for your responses. As you probably noted, I"m a novice at this.After reading your responses I"ll ask the question differently.
I bought a new carb for my 9N and had to change the position of both carb linkage connections to meet the tractor linkage. The choke is ok. With the hand throttle in the first/lowest position and the governor arms at rest,when I connect the short governor linkage to the carb should the throttle plate on top of the carb be fully open? thanks

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05-11-2005 15:43:57

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 Re: ford 8n governor linkage in reply to condorf, 05-11-2005 14:52:37  
The linkages are connected with everything at rest, including the spring-loaded choke.

You can"t see the throttle plate but it"s closed, no throttle, at rest.

The first and lowest position on the hand throttle is "no throttle."

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05-18-2005 07:27:53

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 Re: ford 8n governor linkage in reply to Rob, 05-11-2005 15:43:57  
Rob, thanks for your help. I've installed the new carb as you mentioned. I also installed a new manifold as the old one was cracked.Still will not start.After trying for several minutes I pulled a plug and it was dry as a bone.I'm getting gas to the carb and I'm getting spark. Last fall the tractor ran perfectly. Tried to start it in December with no luck. thought the carb and manifold were the culprits but they must be only part of the problem. I also drained the gas and added new. Any ideas as to what to try next. thanks.

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05-18-2005 09:09:45

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 Re: ford 8n governor linkage in reply to condorf, 05-18-2005 07:27:53  
Spark, fuel and air so need to be sure the exhaust is clear and there"s no daubers or mouse nest in your pipe. I suppose a rag over the end of the pipe would show if the pistons are pumping out the exhaust pipe. You can put your hand over the carb intake to be sure the engine is sucking. Leave it there long you"ll flood the carb and gas will run out if the carb is near right, you don"t want much of that but just so you know.
Then you need to see you have a snappy, blue spark because a wimpy, yellow spark just won"t get it except on your best day. Pull a plug boot off, stick a screwdriver up in the boot, and hold the driver near the headbolt to see what kind of spark you got. You need a good hot blue spark out minimum of 1/16" and better yet, 1/8" or so. You may go over all the little, primary wire terminations and the battery cables (both ends of both cables) with a wire brush to make sure you are getting good continuity, full voltage, and correct amps.
A shot of starter fluid will tell you if it can fire at all.
If you"re still troubled by the linkage to the governor then take it off to start the engine. You can control the throttle arm by hand.

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05-24-2005 16:45:10

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 Re: ford 8n governor linkage in reply to Rob, 05-18-2005 09:09:45  
Rob, thanks for all of your help. My 8n is on the road to recovery. When I couldn't start it over the winter it was a surprise as it had always run perfectly. I ended up installing a new manifold as I found that the old one was cracked. The carb was sloppy at the linkage and I went for a new one. The spark was weak and I installed new points and condensor...still little improvement in the spark so a new coil was next.Good spark now. Still it would not start unless we sprayed gas into the new carb , then it ran good. My neighbor has a 9n and he removed his carb and installed it on my 8n and it started right up...guess it was a faulty new carb. I'm going to install a rebuilt carb and assume all will be ok. Thanks again for your help.

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4D9 Man

05-10-2005 18:44:51

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 Re: ford 8n governor linkage in reply to condorf, 05-10-2005 18:08:35  
When you set the throttle (gas lever) at the lower point the governor"s lever should should be closest to the radiator. The spring on the governor should no be loose, but not tight. It should just sit at a closed point. You may have to mess with the linkage a bit to get it to ajust properly. Hope this helped.

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